Method and system for an exhaust gas particulate filter

摘要

A system for determining a regeneration phase of an exhaust gas particulate filter for an internal combustion engine may include a temperature sensor for detecting an elevated exhaust gas temperature, a sensor for detecting the particulate content in the exhaust gas stream exiting from the exhaust gas particulate filter, and a processing device for determining the regeneration phase on the basis of the detected values. A method for determining a regeneration phase of an exhaust gas particulate filter for an internal combustion engine may include detecting an elevated exhaust gas temperature, sampling a signal from a sensor for detecting the particulate content in the exhaust gas stream exiting from the exhaust gas particulate filter, detecting that the particulate content is elevated, and determining the regeneration phase.

主权项

1. A method for operating an exhaust gas particulate filter for an internal combustion engine, comprising:
sampling a signal from a sensor for detecting particulate content in an exhaust gas stream emerging from the exhaust gas particulate filter; detecting that the particulate content is increased; injecting fuel into a gas stream upstream of the exhaust gas particulate filter and combusting the fuel to elevate a temperature of the exhaust gas particulate filter; and monitoring the signal from the sensor for a predefined time interval following the injection of fuel into the upstream gas stream to control a duration of the fuel injection.